Karen Tumblin, NURSE PRACTITIONER
NPI 1235604679 · Nurse Practitioner · Bay City, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Tumblin, NURSE PRACTITIONER is a Nurse Practitioner provider in Bay City, MI (NPI 1235604679).
Provider details
- NPI number
- 1235604679
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NURSE PRACTITIONER
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4704254478 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
19 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $57 |
Typical Medicare-allowed amounts for these services range $57–$57 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-10-12
- Last updated
- 2018-10-12
Frequently asked questions
- What is Karen Tumblin's NPI number?
- Karen Tumblin's National Provider Identifier (NPI) is 1235604679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Tumblin's specialty?
- Karen Tumblin is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Tumblin located?
- Karen Tumblin's practice location on file with NPPES is 200 S Wenona St, Bay City, MI 48706-8820.
- What is Karen Tumblin's phone number?
- The practice phone number listed in the NPPES registry for Karen Tumblin is (989) 893-8116.
- Does Karen Tumblin accept Medicare?
- Karen Tumblin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Tumblin's NPI active?
- Yes — Karen Tumblin's NPI (1235604679) is active in the NPPES registry as of the last update on 2018-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.